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    <title>动态轨迹路线 | Mars3D | 三维地图 | 火星科技 | 合肥火星科技有限公司</title>

    <!--第三方lib-->
    <script
      type="text/javascript"
      src="../lib/include-lib.js"
      libpath="../lib/"
      include="jquery,jquery.range,font-awesome,bootstrap,bootstrap-checkbox,layer,haoutil,turf,mars3d"
    ></script>

    <link href="css/style.css" rel="stylesheet" />
  </head>

  <body class="dark">
    <!--加载前进行操作提示，优化用户体验-->
    <div id="mask" class="signmask" onclick="removeMask()"></div>

    <div id="mars3dContainer" class="mars3d-container"></div>

    <div class="infoview" id="toolbar">
      <input id="viewAircraft" type="button" class="btn btn-primary" value="跟踪视角" />
      <input id="viewTopDown" type="button" class="btn btn-primary" value="上方视角" />
      <input id="viewSide" type="button" class="btn btn-primary" value="侧方视角" />
    </div>

    <script src="./js/common.js"></script>
    <script type="text/javascript">
      "use script"; //开发环境建议开启严格模式

      var map;
      var graphicLayer;

      var pathEntity = null;

      function initMap(options) {
        //合并属性参数，可覆盖config.json中的对应配置
        var mapOptions = mars3d.Util.merge(options, {
          scene: {
            center: { lat: 32.550222, lng: 117.366824, alt: 2696, heading: 273, pitch: -67 },
          },
          control: {
            animation: true, //是否创建动画小器件，左下角仪表
            timeline: true, //是否显示时间线控件
          },
        });

        //创建三维地球场景
        map = new mars3d.Map("mars3dContainer", mapOptions);

        //创建矢量数据图层
        graphicLayer = new mars3d.layer.GraphicLayer();
        map.addLayer(graphicLayer);

        queryFlyPathApiData().then(function (res) {
          initPath(res);
        });

        //添加事件
        $("#viewAircraft").on("click", function () {
          map.trackedEntity = pathEntity.entity;

          pathEntity.flyToPoint({
            radius: 500, //距离目标点的距离
            heading: 40,
            pitch: -50,
            duration: 0.01,
          });
        });

        $("#viewTopDown").on("click", function () {
          map.trackedEntity = undefined;

          map.flyToPoint(pathEntity.positionShow, {
            radius: 2000,
            heading: -90,
            pitch: -89,
          });
        });

        $("#viewSide").on("click", function () {
          map.trackedEntity = undefined;

          map.flyToPoint(pathEntity.positionShow, {
            radius: 3000,
            heading: -90,
            pitch: -25,
          });
        });
      }

      // 访问后端接口，取数据
      function queryFlyPathApiData() {
        return new Promise(function (resolve, reject) {
          $.ajax({
            url: "//data.mars3d.cn/file/apidemo/flypath.json",
            type: "get",
            dataType: "json",
            success: function (result) {
              console.log(result);
              resolve(result);
            },
            error: function (data) {
              reject(data);
            },
          });
        });
      }

      function initPath(data) {
        var property = new Cesium.SampledPositionProperty();

        var start;
        var stop;
        for (var i = 0, len = data.length; i < len; i++) {
          var item = data[i];
          var lng = Number(item.x.toFixed(6)); //经度
          var lat = Number(item.y.toFixed(6)); //纬度
          var height = item.z; //高度
          var time = item.time; //时间

          var position = null;
          if (lng && lat) {
            position = Cesium.Cartesian3.fromDegrees(lng, lat, height);
          }
          var juliaDate = null;
          if (time) {
            juliaDate = Cesium.JulianDate.fromIso8601(time);
          }
          if (position && juliaDate) {
            property.addSample(juliaDate, position);
          }

          if (i == 0) {
            start = juliaDate;
          } else if (i == len - 1) {
            stop = juliaDate;
          }

          var primitive = new mars3d.graphic.PointPrimitive({
            position: position,
            style: {
              pixelSize: 4,
              color: "#cccccc",
            },
            popup: "编号:" + item.id + "<br/>时间:" + time,
          });
          graphicLayer.addGraphic(primitive);
        }

        //设置时钟属性
        map.clock.startTime = start.clone();
        map.clock.stopTime = stop.clone();
        map.clock.currentTime = start.clone();
        map.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
        map.clock.multiplier = 5;

        if (map.viewer.timeline) {
          map.viewer.timeline.zoomTo(start, stop);
        }

        //创建path对象
        pathEntity = new mars3d.graphic.PathEntity({
          position: property,
          orientation: new Cesium.VelocityOrientationProperty(property),
          style: {
            resolution: 1,
            leadTime: 0,
            trailTime: 3600,
            color: "#ff0000",
            width: 3,
          },
          label: {
            text: "飞机1号",
            font_size: 19,
            font_family: "楷体",
            color: Cesium.Color.AZURE,
            outline: true,
            outlineColor: Cesium.Color.BLACK,
            outlineWidth: 2,
            horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
            verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
            pixelOffset: new Cesium.Cartesian2(10, -25), //偏移量
          },
          model: {
            url: "//data.mars3d.cn/gltf/mars/wrj.glb",
            scale: 0.1,
            minimumPixelSize: 20,
          },
          popup: "飞行1号",
        });
        graphicLayer.addGraphic(pathEntity);

        //圆锥追踪体
        var coneTrack = new mars3d.graphic.ConeTrack({
          position: property,
          style: {
            length: 100,
            angle: 12, //半场角度
            color: "#ff0000",
            opacity: 0.5,
          },
        });
        graphicLayer.addGraphic(coneTrack);
      }
    </script>
  </body>
</html>
